package com.kingcore.note;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JTextArea;

public class InternalFrame extends JFrame implements ActionListener{
    
    /**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	public JDesktopPane desktopPane;
    int count = 1;
    
    public InternalFrame() {
        super("JInternalFrame1");
        Container contentPane = this.getContentPane();
        contentPane.setLayout(new BorderLayout());
        
        JButton b = new JButton("Create New Internal Frames");
        b.addActionListener(this);//当用户按下按钮时，将运行actionPerformed()中的程序
        contentPane.add(b, BorderLayout.SOUTH);
        /*建立一个新的JDesktopPane并加入于contentPane中
         */
        desktopPane = new JDesktopPane(); 
        contentPane.add( desktopPane, BorderLayout.CENTER ); 

        setSize(350, 350); 
        setVisible(true); 
        
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                    System.exit(0);
            }
        });
    }

    /*产生一个可关闭、可改变大小、具有标题、可最大化与最小化的Internal Frame.
     */
    public void actionPerformed(ActionEvent e)
    {
        JInternalFrame internalFrame = new JInternalFrame(
        "Internal Frame "+(count++), true, true, true, true);  

        internalFrame.setLocation( 20,20);
        internalFrame.setSize(200,200); 
        internalFrame.setVisible(true);
        //取得JInternalFrame的Content Pane,用以加入新的组件。
        Container icontentPane = internalFrame.getContentPane();
        JTextArea textArea = new JTextArea();
        JButton b = new JButton("Internal Frame Button");
        /*将JTextArea与JButton对象加入JInternalFrame中。由此呆知，JInteranlFrame加入组件
         *的方式与JFrame是一模一样。
         */
        icontentPane.add(textArea,"Center");
        icontentPane.add(b,"South");
        //将JInternalFrame加入JDesktopPane中，如此一来，即使产生很多JInternalFrame,JDesktopPane也
        //能将它们之间的关系管理得相当良好。
        desktopPane.add(internalFrame);  
        
        try {
            internalFrame.setSelected(true);
        } catch (java.beans.PropertyVetoException ex) {
          System.out.println("Exception while selecting");
        }
    }

    public static void main(String[] args) {
        new InternalFrame();
    }
}
   

